LUCRĂRI ŞTIINŢIFICE Vol. 54 NR. 2 SERIA HORTICULTURĂ

ORS815 and ORS836 were inherited codominant by the hybrid LC 40 ASC x LC
Raus Rf. Also was highlighted the hybrid LC SW 38 ASC x LC 637 Rf for which
were revealed five codominant markers from 10 analyzed (ORS78, ORS243,
ORS349, ORS509 and ORS836).
Thus, codominant nature of inheritance was demonstrated for 2-5 loci,
depending on the hybrid genotype. However, parental genotypes can be clearly
distinguished based on SSR profiles.
Fig. 1 - Dendrogram of the distribution of sunflower genotypes based on microsatellite
sequences
Clustering analysis revealed seven distinct groups (fig. 1). The first group
consists of paternal genotypes LC Raus Rf, LC 39 Rf and their hybrids: Drofa
ASC x LC 39 Rf, Xenia ASC x LC 39 Rf, LC 40 ASC x LC Raus Rf. Although in
hybrid combinations were used different maternal genotypes, the genetic profile is
strongly influenced by the paternal form.
The second and third groups include paternal lines and hybrid forms
properly: paternal genotype LC 637 Rf and it’s hybrid LC SW38 ASC x LC 637
and LC 7 Rf and Drofa ASC x LC 7 Rf hybrid, respectively.
Cluster four contains maternal genotype and most of it’s hybrids: Drofa F1
şi Drofa ASC x LC Raus Rf, Drofa ASC x LC 637 Rf. Only one hybrid genotype
obtained using LC 39 Rf parental form was classified in first group.
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